April 3rd, 2014, 04:48 PM  #1 
Newbie Joined: Apr 2014 From: Auckland Posts: 3 Thanks: 0  Functions
If F(x)=2x+2 Simplify when a. f(x) and b. f(x^2) Im just unsure if i should be substituting in a 'x' in to the equation or i have to multiply the whole equation against the negative sign. Same goes for f(x^2). Can someone please push me in the right direction? Many thanks! 
April 3rd, 2014, 06:44 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 19,708 Thanks: 1805 
I take it you meant f(x) rather than F(x). (a). f(x) = 2(x) + 2 = 2x + 2 (b). f(xÂ²) = 2(xÂ²) + 2 = 2xÂ² + 2 
April 4th, 2014, 02:19 AM  #3 
Senior Member Joined: Mar 2014 Posts: 112 Thanks: 8 
$\displaystyle f(x)\,=\,2x\,+\,2$ $\displaystyle f(x^2)\,=\,2x^2\,+\,2$ 

Tags 
functions 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Functions  johnny  Calculus  2  May 11th, 2011 09:41 PM 
functions  remeday86  Applied Math  2  June 29th, 2010 07:03 PM 
functions  fakesmile  Calculus  3  April 27th, 2009 04:51 PM 
Even and Odd Functions  PokerKid  Algebra  10  October 25th, 2008 08:39 AM 
help / functions  sel  Calculus  3  October 21st, 2008 03:48 AM 